| ; |
| ; jccolext.asm - colorspace conversion (64-bit SSE2) |
| ; |
| ; x86 SIMD extension for IJG JPEG library |
| ; Copyright (C) 1999-2006, MIYASAKA Masaru. |
| ; Copyright (C) 2009, D. R. Commander. |
| ; For conditions of distribution and use, see copyright notice in jsimdext.inc |
| ; |
| ; This file should be assembled with NASM (Netwide Assembler), |
| ; can *not* be assembled with Microsoft's MASM or any compatible |
| ; assembler (including Borland's Turbo Assembler). |
| ; NASM is available from http://nasm.sourceforge.net/ or |
| ; http://sourceforge.net/project/showfiles.php?group_id=6208 |
| ; |
| ; [TAB8] |
| |
| %include "jcolsamp.inc" |
| |
| ; -------------------------------------------------------------------------- |
| ; |
| ; Convert some rows of samples to the output colorspace. |
| ; |
| ; GLOBAL(void) |
| ; jsimd_rgb_ycc_convert_sse2 (JDIMENSION img_width, |
| ; JSAMPARRAY input_buf, JSAMPIMAGE output_buf, |
| ; JDIMENSION output_row, int num_rows); |
| ; |
| |
| ; r10 = JDIMENSION img_width |
| ; r11 = JSAMPARRAY input_buf |
| ; r12 = JSAMPIMAGE output_buf |
| ; r13 = JDIMENSION output_row |
| ; r14 = int num_rows |
| |
| %define wk(i) rbp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM] |
| %define WK_NUM 8 |
| |
| align 16 |
| |
| global EXTN(jsimd_rgb_ycc_convert_sse2) |
| |
| EXTN(jsimd_rgb_ycc_convert_sse2): |
| push rbp |
| mov rax,rsp ; rax = original rbp |
| sub rsp, byte 4 |
| and rsp, byte (-SIZEOF_XMMWORD) ; align to 128 bits |
| mov [rsp],rax |
| mov rbp,rsp ; rbp = aligned rbp |
| lea rsp, [wk(0)] |
| collect_args |
| push rbx |
| |
| mov ecx, r10d |
| test rcx,rcx |
| jz near .return |
| |
| push rcx |
| |
| mov rsi, r12 |
| mov ecx, r13d |
| mov rdi, JSAMPARRAY [rsi+0*SIZEOF_JSAMPARRAY] |
| mov rbx, JSAMPARRAY [rsi+1*SIZEOF_JSAMPARRAY] |
| mov rdx, JSAMPARRAY [rsi+2*SIZEOF_JSAMPARRAY] |
| lea rdi, [rdi+rcx*SIZEOF_JSAMPROW] |
| lea rbx, [rbx+rcx*SIZEOF_JSAMPROW] |
| lea rdx, [rdx+rcx*SIZEOF_JSAMPROW] |
| |
| pop rcx |
| |
| mov rsi, r11 |
| mov eax, r14d |
| test rax,rax |
| jle near .return |
| .rowloop: |
| push rdx |
| push rbx |
| push rdi |
| push rsi |
| push rcx ; col |
| |
| mov rsi, JSAMPROW [rsi] ; inptr |
| mov rdi, JSAMPROW [rdi] ; outptr0 |
| mov rbx, JSAMPROW [rbx] ; outptr1 |
| mov rdx, JSAMPROW [rdx] ; outptr2 |
| |
| cmp rcx, byte SIZEOF_XMMWORD |
| jae near .columnloop |
| |
| %if RGB_PIXELSIZE == 3 ; --------------- |
| |
| .column_ld1: |
| push rax |
| push rdx |
| lea rcx,[rcx+rcx*2] ; imul ecx,RGB_PIXELSIZE |
| test cl, SIZEOF_BYTE |
| jz short .column_ld2 |
| sub rcx, byte SIZEOF_BYTE |
| movzx rax, BYTE [rsi+rcx] |
| .column_ld2: |
| test cl, SIZEOF_WORD |
| jz short .column_ld4 |
| sub rcx, byte SIZEOF_WORD |
| movzx rdx, WORD [rsi+rcx] |
| shl rax, WORD_BIT |
| or rax,rdx |
| .column_ld4: |
| movd xmmA,eax |
| pop rdx |
| pop rax |
| test cl, SIZEOF_DWORD |
| jz short .column_ld8 |
| sub rcx, byte SIZEOF_DWORD |
| movd xmmF, XMM_DWORD [rsi+rcx] |
| pslldq xmmA, SIZEOF_DWORD |
| por xmmA,xmmF |
| .column_ld8: |
| test cl, SIZEOF_MMWORD |
| jz short .column_ld16 |
| sub rcx, byte SIZEOF_MMWORD |
| movq xmmB, XMM_MMWORD [rsi+rcx] |
| pslldq xmmA, SIZEOF_MMWORD |
| por xmmA,xmmB |
| .column_ld16: |
| test cl, SIZEOF_XMMWORD |
| jz short .column_ld32 |
| movdqa xmmF,xmmA |
| movdqu xmmA, XMMWORD [rsi+0*SIZEOF_XMMWORD] |
| mov rcx, SIZEOF_XMMWORD |
| jmp short .rgb_ycc_cnv |
| .column_ld32: |
| test cl, 2*SIZEOF_XMMWORD |
| mov rcx, SIZEOF_XMMWORD |
| jz short .rgb_ycc_cnv |
| movdqa xmmB,xmmA |
| movdqu xmmA, XMMWORD [rsi+0*SIZEOF_XMMWORD] |
| movdqu xmmF, XMMWORD [rsi+1*SIZEOF_XMMWORD] |
| jmp short .rgb_ycc_cnv |
| |
| .columnloop: |
| movdqu xmmA, XMMWORD [rsi+0*SIZEOF_XMMWORD] |
| movdqu xmmF, XMMWORD [rsi+1*SIZEOF_XMMWORD] |
| movdqu xmmB, XMMWORD [rsi+2*SIZEOF_XMMWORD] |
| |
| .rgb_ycc_cnv: |
| ; xmmA=(00 10 20 01 11 21 02 12 22 03 13 23 04 14 24 05) |
| ; xmmF=(15 25 06 16 26 07 17 27 08 18 28 09 19 29 0A 1A) |
| ; xmmB=(2A 0B 1B 2B 0C 1C 2C 0D 1D 2D 0E 1E 2E 0F 1F 2F) |
| |
| movdqa xmmG,xmmA |
| pslldq xmmA,8 ; xmmA=(-- -- -- -- -- -- -- -- 00 10 20 01 11 21 02 12) |
| psrldq xmmG,8 ; xmmG=(22 03 13 23 04 14 24 05 -- -- -- -- -- -- -- --) |
| |
| punpckhbw xmmA,xmmF ; xmmA=(00 08 10 18 20 28 01 09 11 19 21 29 02 0A 12 1A) |
| pslldq xmmF,8 ; xmmF=(-- -- -- -- -- -- -- -- 15 25 06 16 26 07 17 27) |
| |
| punpcklbw xmmG,xmmB ; xmmG=(22 2A 03 0B 13 1B 23 2B 04 0C 14 1C 24 2C 05 0D) |
| punpckhbw xmmF,xmmB ; xmmF=(15 1D 25 2D 06 0E 16 1E 26 2E 07 0F 17 1F 27 2F) |
| |
| movdqa xmmD,xmmA |
| pslldq xmmA,8 ; xmmA=(-- -- -- -- -- -- -- -- 00 08 10 18 20 28 01 09) |
| psrldq xmmD,8 ; xmmD=(11 19 21 29 02 0A 12 1A -- -- -- -- -- -- -- --) |
| |
| punpckhbw xmmA,xmmG ; xmmA=(00 04 08 0C 10 14 18 1C 20 24 28 2C 01 05 09 0D) |
| pslldq xmmG,8 ; xmmG=(-- -- -- -- -- -- -- -- 22 2A 03 0B 13 1B 23 2B) |
| |
| punpcklbw xmmD,xmmF ; xmmD=(11 15 19 1D 21 25 29 2D 02 06 0A 0E 12 16 1A 1E) |
| punpckhbw xmmG,xmmF ; xmmG=(22 26 2A 2E 03 07 0B 0F 13 17 1B 1F 23 27 2B 2F) |
| |
| movdqa xmmE,xmmA |
| pslldq xmmA,8 ; xmmA=(-- -- -- -- -- -- -- -- 00 04 08 0C 10 14 18 1C) |
| psrldq xmmE,8 ; xmmE=(20 24 28 2C 01 05 09 0D -- -- -- -- -- -- -- --) |
| |
| punpckhbw xmmA,xmmD ; xmmA=(00 02 04 06 08 0A 0C 0E 10 12 14 16 18 1A 1C 1E) |
| pslldq xmmD,8 ; xmmD=(-- -- -- -- -- -- -- -- 11 15 19 1D 21 25 29 2D) |
| |
| punpcklbw xmmE,xmmG ; xmmE=(20 22 24 26 28 2A 2C 2E 01 03 05 07 09 0B 0D 0F) |
| punpckhbw xmmD,xmmG ; xmmD=(11 13 15 17 19 1B 1D 1F 21 23 25 27 29 2B 2D 2F) |
| |
| pxor xmmH,xmmH |
| |
| movdqa xmmC,xmmA |
| punpcklbw xmmA,xmmH ; xmmA=(00 02 04 06 08 0A 0C 0E) |
| punpckhbw xmmC,xmmH ; xmmC=(10 12 14 16 18 1A 1C 1E) |
| |
| movdqa xmmB,xmmE |
| punpcklbw xmmE,xmmH ; xmmE=(20 22 24 26 28 2A 2C 2E) |
| punpckhbw xmmB,xmmH ; xmmB=(01 03 05 07 09 0B 0D 0F) |
| |
| movdqa xmmF,xmmD |
| punpcklbw xmmD,xmmH ; xmmD=(11 13 15 17 19 1B 1D 1F) |
| punpckhbw xmmF,xmmH ; xmmF=(21 23 25 27 29 2B 2D 2F) |
| |
| %else ; RGB_PIXELSIZE == 4 ; ----------- |
| |
| .column_ld1: |
| test cl, SIZEOF_XMMWORD/16 |
| jz short .column_ld2 |
| sub rcx, byte SIZEOF_XMMWORD/16 |
| movd xmmA, XMM_DWORD [rsi+rcx*RGB_PIXELSIZE] |
| .column_ld2: |
| test cl, SIZEOF_XMMWORD/8 |
| jz short .column_ld4 |
| sub rcx, byte SIZEOF_XMMWORD/8 |
| movq xmmE, XMM_MMWORD [rsi+rcx*RGB_PIXELSIZE] |
| pslldq xmmA, SIZEOF_MMWORD |
| por xmmA,xmmE |
| .column_ld4: |
| test cl, SIZEOF_XMMWORD/4 |
| jz short .column_ld8 |
| sub rcx, byte SIZEOF_XMMWORD/4 |
| movdqa xmmE,xmmA |
| movdqu xmmA, XMMWORD [rsi+rcx*RGB_PIXELSIZE] |
| .column_ld8: |
| test cl, SIZEOF_XMMWORD/2 |
| mov rcx, SIZEOF_XMMWORD |
| jz short .rgb_ycc_cnv |
| movdqa xmmF,xmmA |
| movdqa xmmH,xmmE |
| movdqu xmmA, XMMWORD [rsi+0*SIZEOF_XMMWORD] |
| movdqu xmmE, XMMWORD [rsi+1*SIZEOF_XMMWORD] |
| jmp short .rgb_ycc_cnv |
| |
| .columnloop: |
| movdqu xmmA, XMMWORD [rsi+0*SIZEOF_XMMWORD] |
| movdqu xmmE, XMMWORD [rsi+1*SIZEOF_XMMWORD] |
| movdqu xmmF, XMMWORD [rsi+2*SIZEOF_XMMWORD] |
| movdqu xmmH, XMMWORD [rsi+3*SIZEOF_XMMWORD] |
| |
| .rgb_ycc_cnv: |
| ; xmmA=(00 10 20 30 01 11 21 31 02 12 22 32 03 13 23 33) |
| ; xmmE=(04 14 24 34 05 15 25 35 06 16 26 36 07 17 27 37) |
| ; xmmF=(08 18 28 38 09 19 29 39 0A 1A 2A 3A 0B 1B 2B 3B) |
| ; xmmH=(0C 1C 2C 3C 0D 1D 2D 3D 0E 1E 2E 3E 0F 1F 2F 3F) |
| |
| movdqa xmmD,xmmA |
| punpcklbw xmmA,xmmE ; xmmA=(00 04 10 14 20 24 30 34 01 05 11 15 21 25 31 35) |
| punpckhbw xmmD,xmmE ; xmmD=(02 06 12 16 22 26 32 36 03 07 13 17 23 27 33 37) |
| |
| movdqa xmmC,xmmF |
| punpcklbw xmmF,xmmH ; xmmF=(08 0C 18 1C 28 2C 38 3C 09 0D 19 1D 29 2D 39 3D) |
| punpckhbw xmmC,xmmH ; xmmC=(0A 0E 1A 1E 2A 2E 3A 3E 0B 0F 1B 1F 2B 2F 3B 3F) |
| |
| movdqa xmmB,xmmA |
| punpcklwd xmmA,xmmF ; xmmA=(00 04 08 0C 10 14 18 1C 20 24 28 2C 30 34 38 3C) |
| punpckhwd xmmB,xmmF ; xmmB=(01 05 09 0D 11 15 19 1D 21 25 29 2D 31 35 39 3D) |
| |
| movdqa xmmG,xmmD |
| punpcklwd xmmD,xmmC ; xmmD=(02 06 0A 0E 12 16 1A 1E 22 26 2A 2E 32 36 3A 3E) |
| punpckhwd xmmG,xmmC ; xmmG=(03 07 0B 0F 13 17 1B 1F 23 27 2B 2F 33 37 3B 3F) |
| |
| movdqa xmmE,xmmA |
| punpcklbw xmmA,xmmD ; xmmA=(00 02 04 06 08 0A 0C 0E 10 12 14 16 18 1A 1C 1E) |
| punpckhbw xmmE,xmmD ; xmmE=(20 22 24 26 28 2A 2C 2E 30 32 34 36 38 3A 3C 3E) |
| |
| movdqa xmmH,xmmB |
| punpcklbw xmmB,xmmG ; xmmB=(01 03 05 07 09 0B 0D 0F 11 13 15 17 19 1B 1D 1F) |
| punpckhbw xmmH,xmmG ; xmmH=(21 23 25 27 29 2B 2D 2F 31 33 35 37 39 3B 3D 3F) |
| |
| pxor xmmF,xmmF |
| |
| movdqa xmmC,xmmA |
| punpcklbw xmmA,xmmF ; xmmA=(00 02 04 06 08 0A 0C 0E) |
| punpckhbw xmmC,xmmF ; xmmC=(10 12 14 16 18 1A 1C 1E) |
| |
| movdqa xmmD,xmmB |
| punpcklbw xmmB,xmmF ; xmmB=(01 03 05 07 09 0B 0D 0F) |
| punpckhbw xmmD,xmmF ; xmmD=(11 13 15 17 19 1B 1D 1F) |
| |
| movdqa xmmG,xmmE |
| punpcklbw xmmE,xmmF ; xmmE=(20 22 24 26 28 2A 2C 2E) |
| punpckhbw xmmG,xmmF ; xmmG=(30 32 34 36 38 3A 3C 3E) |
| |
| punpcklbw xmmF,xmmH |
| punpckhbw xmmH,xmmH |
| psrlw xmmF,BYTE_BIT ; xmmF=(21 23 25 27 29 2B 2D 2F) |
| psrlw xmmH,BYTE_BIT ; xmmH=(31 33 35 37 39 3B 3D 3F) |
| |
| %endif ; RGB_PIXELSIZE ; --------------- |
| |
| ; xmm0=R(02468ACE)=RE, xmm2=G(02468ACE)=GE, xmm4=B(02468ACE)=BE |
| ; xmm1=R(13579BDF)=RO, xmm3=G(13579BDF)=GO, xmm5=B(13579BDF)=BO |
| |
| ; (Original) |
| ; Y = 0.29900 * R + 0.58700 * G + 0.11400 * B |
| ; Cb = -0.16874 * R - 0.33126 * G + 0.50000 * B + CENTERJSAMPLE |
| ; Cr = 0.50000 * R - 0.41869 * G - 0.08131 * B + CENTERJSAMPLE |
| ; |
| ; (This implementation) |
| ; Y = 0.29900 * R + 0.33700 * G + 0.11400 * B + 0.25000 * G |
| ; Cb = -0.16874 * R - 0.33126 * G + 0.50000 * B + CENTERJSAMPLE |
| ; Cr = 0.50000 * R - 0.41869 * G - 0.08131 * B + CENTERJSAMPLE |
| |
| movdqa XMMWORD [wk(0)], xmm0 ; wk(0)=RE |
| movdqa XMMWORD [wk(1)], xmm1 ; wk(1)=RO |
| movdqa XMMWORD [wk(2)], xmm4 ; wk(2)=BE |
| movdqa XMMWORD [wk(3)], xmm5 ; wk(3)=BO |
| |
| movdqa xmm6,xmm1 |
| punpcklwd xmm1,xmm3 |
| punpckhwd xmm6,xmm3 |
| movdqa xmm7,xmm1 |
| movdqa xmm4,xmm6 |
| pmaddwd xmm1,[rel PW_F0299_F0337] ; xmm1=ROL*FIX(0.299)+GOL*FIX(0.337) |
| pmaddwd xmm6,[rel PW_F0299_F0337] ; xmm6=ROH*FIX(0.299)+GOH*FIX(0.337) |
| pmaddwd xmm7,[rel PW_MF016_MF033] ; xmm7=ROL*-FIX(0.168)+GOL*-FIX(0.331) |
| pmaddwd xmm4,[rel PW_MF016_MF033] ; xmm4=ROH*-FIX(0.168)+GOH*-FIX(0.331) |
| |
| movdqa XMMWORD [wk(4)], xmm1 ; wk(4)=ROL*FIX(0.299)+GOL*FIX(0.337) |
| movdqa XMMWORD [wk(5)], xmm6 ; wk(5)=ROH*FIX(0.299)+GOH*FIX(0.337) |
| |
| pxor xmm1,xmm1 |
| pxor xmm6,xmm6 |
| punpcklwd xmm1,xmm5 ; xmm1=BOL |
| punpckhwd xmm6,xmm5 ; xmm6=BOH |
| psrld xmm1,1 ; xmm1=BOL*FIX(0.500) |
| psrld xmm6,1 ; xmm6=BOH*FIX(0.500) |
| |
| movdqa xmm5,[rel PD_ONEHALFM1_CJ] ; xmm5=[PD_ONEHALFM1_CJ] |
| |
| paddd xmm7,xmm1 |
| paddd xmm4,xmm6 |
| paddd xmm7,xmm5 |
| paddd xmm4,xmm5 |
| psrld xmm7,SCALEBITS ; xmm7=CbOL |
| psrld xmm4,SCALEBITS ; xmm4=CbOH |
| packssdw xmm7,xmm4 ; xmm7=CbO |
| |
| movdqa xmm1, XMMWORD [wk(2)] ; xmm1=BE |
| |
| movdqa xmm6,xmm0 |
| punpcklwd xmm0,xmm2 |
| punpckhwd xmm6,xmm2 |
| movdqa xmm5,xmm0 |
| movdqa xmm4,xmm6 |
| pmaddwd xmm0,[rel PW_F0299_F0337] ; xmm0=REL*FIX(0.299)+GEL*FIX(0.337) |
| pmaddwd xmm6,[rel PW_F0299_F0337] ; xmm6=REH*FIX(0.299)+GEH*FIX(0.337) |
| pmaddwd xmm5,[rel PW_MF016_MF033] ; xmm5=REL*-FIX(0.168)+GEL*-FIX(0.331) |
| pmaddwd xmm4,[rel PW_MF016_MF033] ; xmm4=REH*-FIX(0.168)+GEH*-FIX(0.331) |
| |
| movdqa XMMWORD [wk(6)], xmm0 ; wk(6)=REL*FIX(0.299)+GEL*FIX(0.337) |
| movdqa XMMWORD [wk(7)], xmm6 ; wk(7)=REH*FIX(0.299)+GEH*FIX(0.337) |
| |
| pxor xmm0,xmm0 |
| pxor xmm6,xmm6 |
| punpcklwd xmm0,xmm1 ; xmm0=BEL |
| punpckhwd xmm6,xmm1 ; xmm6=BEH |
| psrld xmm0,1 ; xmm0=BEL*FIX(0.500) |
| psrld xmm6,1 ; xmm6=BEH*FIX(0.500) |
| |
| movdqa xmm1,[rel PD_ONEHALFM1_CJ] ; xmm1=[PD_ONEHALFM1_CJ] |
| |
| paddd xmm5,xmm0 |
| paddd xmm4,xmm6 |
| paddd xmm5,xmm1 |
| paddd xmm4,xmm1 |
| psrld xmm5,SCALEBITS ; xmm5=CbEL |
| psrld xmm4,SCALEBITS ; xmm4=CbEH |
| packssdw xmm5,xmm4 ; xmm5=CbE |
| |
| psllw xmm7,BYTE_BIT |
| por xmm5,xmm7 ; xmm5=Cb |
| movdqa XMMWORD [rbx], xmm5 ; Save Cb |
| |
| movdqa xmm0, XMMWORD [wk(3)] ; xmm0=BO |
| movdqa xmm6, XMMWORD [wk(2)] ; xmm6=BE |
| movdqa xmm1, XMMWORD [wk(1)] ; xmm1=RO |
| |
| movdqa xmm4,xmm0 |
| punpcklwd xmm0,xmm3 |
| punpckhwd xmm4,xmm3 |
| movdqa xmm7,xmm0 |
| movdqa xmm5,xmm4 |
| pmaddwd xmm0,[rel PW_F0114_F0250] ; xmm0=BOL*FIX(0.114)+GOL*FIX(0.250) |
| pmaddwd xmm4,[rel PW_F0114_F0250] ; xmm4=BOH*FIX(0.114)+GOH*FIX(0.250) |
| pmaddwd xmm7,[rel PW_MF008_MF041] ; xmm7=BOL*-FIX(0.081)+GOL*-FIX(0.418) |
| pmaddwd xmm5,[rel PW_MF008_MF041] ; xmm5=BOH*-FIX(0.081)+GOH*-FIX(0.418) |
| |
| movdqa xmm3,[rel PD_ONEHALF] ; xmm3=[PD_ONEHALF] |
| |
| paddd xmm0, XMMWORD [wk(4)] |
| paddd xmm4, XMMWORD [wk(5)] |
| paddd xmm0,xmm3 |
| paddd xmm4,xmm3 |
| psrld xmm0,SCALEBITS ; xmm0=YOL |
| psrld xmm4,SCALEBITS ; xmm4=YOH |
| packssdw xmm0,xmm4 ; xmm0=YO |
| |
| pxor xmm3,xmm3 |
| pxor xmm4,xmm4 |
| punpcklwd xmm3,xmm1 ; xmm3=ROL |
| punpckhwd xmm4,xmm1 ; xmm4=ROH |
| psrld xmm3,1 ; xmm3=ROL*FIX(0.500) |
| psrld xmm4,1 ; xmm4=ROH*FIX(0.500) |
| |
| movdqa xmm1,[rel PD_ONEHALFM1_CJ] ; xmm1=[PD_ONEHALFM1_CJ] |
| |
| paddd xmm7,xmm3 |
| paddd xmm5,xmm4 |
| paddd xmm7,xmm1 |
| paddd xmm5,xmm1 |
| psrld xmm7,SCALEBITS ; xmm7=CrOL |
| psrld xmm5,SCALEBITS ; xmm5=CrOH |
| packssdw xmm7,xmm5 ; xmm7=CrO |
| |
| movdqa xmm3, XMMWORD [wk(0)] ; xmm3=RE |
| |
| movdqa xmm4,xmm6 |
| punpcklwd xmm6,xmm2 |
| punpckhwd xmm4,xmm2 |
| movdqa xmm1,xmm6 |
| movdqa xmm5,xmm4 |
| pmaddwd xmm6,[rel PW_F0114_F0250] ; xmm6=BEL*FIX(0.114)+GEL*FIX(0.250) |
| pmaddwd xmm4,[rel PW_F0114_F0250] ; xmm4=BEH*FIX(0.114)+GEH*FIX(0.250) |
| pmaddwd xmm1,[rel PW_MF008_MF041] ; xmm1=BEL*-FIX(0.081)+GEL*-FIX(0.418) |
| pmaddwd xmm5,[rel PW_MF008_MF041] ; xmm5=BEH*-FIX(0.081)+GEH*-FIX(0.418) |
| |
| movdqa xmm2,[rel PD_ONEHALF] ; xmm2=[PD_ONEHALF] |
| |
| paddd xmm6, XMMWORD [wk(6)] |
| paddd xmm4, XMMWORD [wk(7)] |
| paddd xmm6,xmm2 |
| paddd xmm4,xmm2 |
| psrld xmm6,SCALEBITS ; xmm6=YEL |
| psrld xmm4,SCALEBITS ; xmm4=YEH |
| packssdw xmm6,xmm4 ; xmm6=YE |
| |
| psllw xmm0,BYTE_BIT |
| por xmm6,xmm0 ; xmm6=Y |
| movdqa XMMWORD [rdi], xmm6 ; Save Y |
| |
| pxor xmm2,xmm2 |
| pxor xmm4,xmm4 |
| punpcklwd xmm2,xmm3 ; xmm2=REL |
| punpckhwd xmm4,xmm3 ; xmm4=REH |
| psrld xmm2,1 ; xmm2=REL*FIX(0.500) |
| psrld xmm4,1 ; xmm4=REH*FIX(0.500) |
| |
| movdqa xmm0,[rel PD_ONEHALFM1_CJ] ; xmm0=[PD_ONEHALFM1_CJ] |
| |
| paddd xmm1,xmm2 |
| paddd xmm5,xmm4 |
| paddd xmm1,xmm0 |
| paddd xmm5,xmm0 |
| psrld xmm1,SCALEBITS ; xmm1=CrEL |
| psrld xmm5,SCALEBITS ; xmm5=CrEH |
| packssdw xmm1,xmm5 ; xmm1=CrE |
| |
| psllw xmm7,BYTE_BIT |
| por xmm1,xmm7 ; xmm1=Cr |
| movdqa XMMWORD [rdx], xmm1 ; Save Cr |
| |
| sub rcx, byte SIZEOF_XMMWORD |
| add rsi, byte RGB_PIXELSIZE*SIZEOF_XMMWORD ; inptr |
| add rdi, byte SIZEOF_XMMWORD ; outptr0 |
| add rbx, byte SIZEOF_XMMWORD ; outptr1 |
| add rdx, byte SIZEOF_XMMWORD ; outptr2 |
| cmp rcx, byte SIZEOF_XMMWORD |
| jae near .columnloop |
| test rcx,rcx |
| jnz near .column_ld1 |
| |
| pop rcx ; col |
| pop rsi |
| pop rdi |
| pop rbx |
| pop rdx |
| |
| add rsi, byte SIZEOF_JSAMPROW ; input_buf |
| add rdi, byte SIZEOF_JSAMPROW |
| add rbx, byte SIZEOF_JSAMPROW |
| add rdx, byte SIZEOF_JSAMPROW |
| dec rax ; num_rows |
| jg near .rowloop |
| |
| .return: |
| pop rbx |
| uncollect_args |
| mov rsp,rbp ; rsp <- aligned rbp |
| pop rsp ; rsp <- original rbp |
| pop rbp |
| ret |
| |
| ; For some reason, the OS X linker does not honor the request to align the |
| ; segment unless we do this. |
| align 16 |
